PRODUCT REVIEW

SAMYANG AF 45mm F1.8 FE SONY E-MOUNT

This is an in-depth review of the Samyang AF 45mm F1.8 FE prime lens. Mirco Zancanella 2019-05-14
SAMYANG AF 45mm F1.8 FE SONY E-MOUNT


General aspects and image quality

This is an in-depth review of the Samyang AF 45mm F1.8 FE  prime lens. 


The Samyang AF 45mm F1.8 FE is a consumer-grade lens for photographers who seek a normal distance prime lens with quality optics at an affordable price. Its large aperture of f/1.8 is great for low-light photography and the shallow depth of field helps isolate subjects from the background.

I’m an everyday user of the Sigma art 50 f1.4 and I have to say that the Samyang AF 45mm F1.8 FE does not cut a poor figure next to it. Obviously they are lenses from different market segments so the quality of the Sigma art is unavoidably better but, as mentioned, the quality of the Samyang AF 45mm F1.8 FE is also really good.

In my opinion, a 45mm is much better than a 50mm. It is more versatile, more interesting and lets you be more creative when composing different pictures.







 

 

 

Lens features 

Main Features:

Good sharpness;
Low weight;
Nice autofocus;
Lovely sunstar.


Technical Specifications:

Mount Type: Sony e-mount
Focal Length: 45mm
Maximum Aperture: f/1.8
Minimum Aperture: f/22
Format: FX/35mm
Lens Elements: 7
Lens Groups: 6
Diaphragm Blades: 9 
Autofocus: Yes
Minimum Focus Distance: 0.45m 
Filter Size: 49mm
Dimensions: 56.1mm
Weight: 162g



Lens Handling and Build

Similar to the recently introduced Samyang AF 85mm F1.4 FE prime lens, the Samyang AF 45mm F1.8 FE has a solid build, with a plastic exterior and a metal mount. Compared to the Sigma art lens, I have to say that “dimensions count”. The Samyang AF 45mm F1.8 FE is really small and light.





Due to its dimensions, the Samyang AF 45mm F1.4 FE is highly suited for street photos and videos on a gimbal or other stabilizers (even the smallest and cheapest will stabilize your camera with a Samyang AF 45mm f/1.8 mounted on it).
(HERE YOU CAN PUT A VIDEO)



Autofocus Performance and Accuracy

The Samyang AF 45mm F1.8 FE autofocuses as fast as the more expensive Sigma art 50 f1.4. When I first mounted both lenses on two different camera bodies and went from infinity to close focus and back, I was pleasantly surprised to see the Samyang AF 45mm F1.8 FE autofocus feature. 

Next, I performed a series of tests both indoors and outdoors to see how accurate the autofocus on the Samyang AF 45mm F1.8 FE is versus the Sigma art 50 f1.4: same results. Even under very dim lighting conditions, both lenses had no issues achieiving correct focus on dark subjects, which is a good thing. So, performance and accuracy are really good on the Samyang AF 45mm F1.8 FE.







Conclusions

I was quite surprised to see such results in my tests: the Samyang AF 45mm F1.8 FE is light and small so I didn’t expect such an amazing result. I can only assume that the performance is this good due to the quality of the elements in the lens, but I am sure other lens design factors also contribute. 

I really enjoyed shooting with this lens in outdoor environments and it performed great even in challenging light. Its AF performance is impressive and the lens delivers accurate results when mounted both on top of the mirrorless like Sony a7iii or Sony a7rii and on entry-level like Sony a6300. 

The bokeh looks like a cat eye. It’s a bit nervous but really enjoyable at sight at maximum aperture. Colors and contrast are also very good; I could not see any difference when compared to the Sony 55mm f1.8. Due to its light weight and relatively small size (when compared to zoom lenses and longer primes), the Samyang AF 45mm F1.8 FE works great on any mirrorless. The lens is great for portraits, street, events, wedding photography and FX or DX cameras.

When compared to other 50mm lenses currently available on the market, the Samyang AF 45mm F1.8 FE definitely has the highest price-performance ratio. 

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森养最佳标准画角提案解析

从人与人之间的关系乃至为了营造美丽的空间而布置装饰品时都需要保持适当的距离。那么,为了更好地欣赏美术或摄影作品,我们应该保持多少距离?

答案是相当于“作品框架对角线的长度”的距离。

표준화각 자료 이미지
표준화각 자료 이미지

为了将作品完整地纳入视野并予欣赏,保持相当于作品对角线的距离为宜。如果距离过近,将大于人眼可集中精力的50°视角而无法取的良好的欣赏效果。

为了最佳欣赏效果与最佳视角而保持理想距离也适用于摄影技术。在拍摄静止画像的摄影技术中,将等于摄像面对角线长度的焦距镜头定义为标准镜头。数码相机的全帧传感器尺寸为36x24毫米,其对角线距离约为43.26毫米,标准镜头应为多少毫米以下的最理想答案可以称为“接近43.26毫米的数据”,而难以断定是至今被视作标准镜头代名词的“50毫米”。

以往与胶片对角线长度相仿的45mm画角镜头较为常见,随着SLR相机大获成功,为了保留可容纳反射镜的空间,50mm被视作标准镜头。但是,最近随着无反相机底边大幅放大, 鉴于无反相机法兰距短的特点,需要将标准镜头的画角以45mm再度予以解释,由此开始研发AF 45mm F1.8 FE。 与35mm画角镜头相比,三阳的AF 45mm F1.8 FE将畸变现象降至最低,且比55mm画角拍摄范围宽,为人物、风景、建筑物及宠物等各种主题摄影呈献令人满意的效果。

什么是预设光圈功能?

在预设光圈功能中,光圈可以像”控制环操作音消除(De-click)镜头“一样丝滑驱动,为视频拍摄提供支持。

富士相机的设计根据最小曝光量(F-stop)控制光圈,当相机控制光圈时,会依靠短暂闪烁来调节曝光。而AF 75mm F1.8 X不会向机身传送光圈信息,这种刻意的“预设光圈功能”无需闪烁就可让平滑的曝光调节变为可能。只需控制光圈就可以使ISO和快门速度适应不同的曝光环境,因此即使采用1/2 F-stop也依然可以调节曝光。

什么是预设光圈功能?

在预设光圈功能中,光圈可以像”控制环操作音消除(De-click)镜头“一样丝滑驱动,为视频拍摄提供支持。

富士相机的设计根据最小曝光量(F-stop)控制光圈,当相机控制光圈时,会依靠短暂闪烁来调节曝光。而AF 75mm F1.8 X不会向机身传送光圈信息,这种刻意的“预设光圈功能”无需闪烁就可让平滑的曝光调节变为可能。只需控制光圈就可以使ISO和快门速度适应不同的曝光环境,因此即使采用1/2 F-stop也依然可以调节曝光。

有哪些预设光圈功能的使用建议?

预设光圈功能仅能在视频拍摄模式下运行。 建议在f/1.8光圈和A、M曝光模式下使用该功能。有关“预设光圈功能”的使用建议请参考上表。

* 预设光圈功能的使用方法

1) 设置相机机身
      AF模式 → 视频拍摄模式(“A”或“M”模式)→ 光圈值固定在f/1.8
(2) AF 75mm F1.8 X镜头设置
      将“自定义开关”切换为“模式2(M2)”
(3) 使用对焦环调整预设光圈

有哪些预设光圈功能的使用建议?

预设光圈功能仅能在视频拍摄模式下运行。 建议在f/1.8光圈和A、M曝光模式下使用该功能。有关“预设光圈功能”的使用建议请参考上表。

* 预设光圈功能的使用方法

1) 设置相机机身
      AF模式 → 视频拍摄模式(“A”或“M”模式)→ 光圈值固定在f/1.8
(2) AF 75mm F1.8 X镜头设置
      将“自定义开关”切换为“模式2(M2)”
(3) 使用对焦环调整预设光圈

Dolly shot是什么?介绍摄影办法

[Dolly Shot是什么?]

一般利用带轮子的车,根据调整相机变焦的速度前后移动拍摄的技术。这导致被摄体和背景的倍率差异,从而将梦幻效应记录在视频中。

[简单用手持拍Dolly shot的方法]

Tip.如果移动距离长,相机可能会晃动,请在35~100mm区间拍摄。
1.距离被摄体约1.5~2m左右。
2.将自定义开关切换到MF和Mode3后,将视角设定在100mm左右。
3.通过调节对焦环聚焦被摄物,然后将光圈设置为F8~16。
4.利用上身和手臂,将相机靠近被摄体,将变焦操作慢慢向左(广角方向)转动。
5. 完成Dolly shot!
※在与拍摄对象更远的距离拍摄时,使用卡丁车或万向稳定器等,可以更稳定地进行拍摄。

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* Cameras released within 5 years from 2019 are tested.

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